I took this image in Canada. I loved everything except the skyline. The buildings ruined the mood for me so I changed it. I took a tree line from another image, fit it into this image, got rid of a couple of stray birds, and then created some more clouds. I had to color correct the tree line because it was in different lighting. I used pretty clouds from a lake picture I had taken and color corrected the blue of the sky. It was a good Photoshop exercise and I now have the image I envisioned. You can see the optimized version of the original in my previous post on Canada.